I think they start at 25mg, and go to over 100mg/patch. Your Doctor will be able to adjust the dosage easily. One thing; DON'T EVER cut them in half to increase or decrease dosing. Thats a very damgerous thing to do, and can result in an overdose.

Your Dad's Doc will likely give him something for breakthrough pain...codiene, morphine, oxycodone, percocet, etc.

All are short term, fairly quick acting narcotic analgesics. They work with the fentanyl patches to smooth out the peaks and valleys of pain, and are an important part of effective pain management. Your Dad's entitled to having his pain under control, and the Docs will help him there
Wayne